Had a club oil change party yesterday. We were 1st timers at doing our own oil changes. I bought Mobil 1 Oil with API classification SN, SM, SL. SL classification meeting BRP requirement. Before I started a club member pointed out that the owners manual had a notice, which I had missed, stating not to use API rated SM oil because it could harm clutch. On left side of page 127 is the notice, "to avoid damaging the clutch, do not use a motor oil meeting the API service SM or ILSAC GF-4 classification. Clutch slippage will occur". I'll take back Mobil 1 oil although I believe it is a very good product. No harm done had not changed oil will just use Amsoil for my own oil changes from now on. Just a heads up for those, like me, that might have missed notice.